Comparison of 2-day-old and 14-day-old chicken colonization models for<i>Campylobacter jejuni</i>

Ringoir, Danielle Desiree; Szylo, Daniel; Korolik, Victoria

doi:10.1111/j.1574-695x.2006.00181.x

Cited by 27 publications

(34 citation statements)

References 17 publications

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“…A similar change of the predominant clone [13] and the colonisation phenotypes [20] in chickens were reported. Humphrey et al [5] have reported that a small proportion of FQresistant Campylobacter spp.…”

supporting

confidence: 73%

The Dynamics of Antimicrobial-Resistant Campylobacter jejuni on Japanese Broiler Farms

Ishihara

Yano

Nishimura

et al. 2006

The Journal of Veterinary Medical Science

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ABSTRACT. We investigated for dynamics of Campylobacter clones on 2 different managerial broiler farms. Campylobacter isolates were differentiated by resistance typing and molecular typing methods. On farm I, the same C. jejuni clones resistant to fluoroquinolone and oxytetracycline were isolated after one and half years again and another susceptible clone was invaded. The susceptible clone was isolated again after half year. Broiler flocks on the farm may be repeatedly infected with a few C. jejuni clones. On farm II, new clones including antimicrobial resistant one, were often invaded. The change of predominant C. jejuni clone in each flock on both the farms was observed, in the absence of antimicrobial selective pressure.

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supporting

confidence: 73%

The Dynamics of Antimicrobial-Resistant Campylobacter jejuni on Japanese Broiler Farms

Ishihara

Yano

Nishimura

et al. 2006

The Journal of Veterinary Medical Science

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“…The cecum is more susceptible to C. jejuni colonization than other tissues including spleen, lung, heart, and liver in the chicken (Knudsen et al, 2006). Campylobacter jejuni isolated from both humans and chickens are capable of colonizing chickens (Stern et al, 1990;Knudsen et al, 2006;Ringoir et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

The Paternal Effect of Campylobacter jejuni Colonization in Ceca in Broilers

Swaggerty

Kogut

et al. 2008

Poultry Science

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Campylobacter jejuni is one of the most common causes of acute enteritis worldwide. Chickens are believed to be the main reservoir of C. jejuni. The role that host genetics play in resistance/susceptibility to C. jejuni colonization in broilers is still not clear. Day-old broilers from 2 parental lines (A and B) and their F(1) reciprocal crosses (C and D) were challenged orally with 10(5) cfu of C. jejuni to address the role of genetics in determining resistance/susceptibility to C. jejuni colonization in broilers. Cloacal swabs were collected on 6, 10, and 13 d postinoculation (dpi), and cecal contents cultured for C. jejuni on 7 and 14 dpi. The number of C. jejuni colonies in the cloacal swabs and cecal contents of each bird were recorded at each time point. Significantly fewer bacteria were found in the cecal contents from line A than B (P < 0.05) and cross D (A male x B female) when compared with cross C (A female x B male) at both 7 and 14 dpi. There was a significant correlation between C. jejuni counts in cloacal swabs and those in cecal contents. The results indicated that a paternal effect might be one of the important genetic factors influencing resistance to C. jejuni colonization in broilers.

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“…The risk of introduction of Campylobacter can be high throughout the rearing period, but it could also be hypothesized that this risk may increase over time. Another possibility is that young chicks are less susceptible, as indicated by Ringoir et al (13) and Sahin et al (14), who demonstrated that age and maternally derived immunity had an effect on susceptibility. More insight into the underlying mechanism of this phenomenon may provide clues for prevention of Campylobacter colonization.…”

Section: Discussionmentioning

confidence: 99%

Quantifying Transmission of Campylobacter jejuni in Commercial Broiler Flocks

Gerwe

Miflin²,

Templeton³

et al. 2009

Appl Environ Microbiol

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Since meat from poultry colonized with Campylobacter spp. is a major cause of bacterial gastroenteritis, human exposure should be reduced by, among other things, prevention of colonization of broiler flocks. To obtain more insight into possible sources of introduction of Campylobacter into broiler flocks, it is essential to estimate the moment that the first bird in a flock is colonized. If the rate of transmission within a flock were known, such an estimate could be determined from the change in the prevalence of colonized birds in a flock over time. The aim of this study was to determine the rate of transmission of Campylobacter using field data gathered for 5 years for Australian broiler flocks. We used unique sampling data for 42 Campylobacter jejuni-colonized flocks and estimated the transmission rate, which is defined as the number of secondary infections caused by one colonized bird per day. The estimate was 2.37 ؎ 0.295 infections per infectious bird per day, which implies that in our study population colonized flocks consisting of 20,000 broilers would have an increase in within-flock prevalence to 95% within 4.4 to 7.2 days after colonization of the first broiler. Using Bayesian analysis, the moment of colonization of the first bird in a flock was estimated to be from 21 days of age onward in all flocks in the study. This study provides an important quantitative estimate of the rate of transmission of Campylobacter in broiler flocks, which could be helpful in future studies on the epidemiology of Campylobacter in the field.

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Comparison of 2-day-old and 14-day-old chicken colonization models forCampylobacter jejuni

Cited by 27 publications

References 17 publications

The Dynamics of Antimicrobial-Resistant Campylobacter jejuni on Japanese Broiler Farms

The Dynamics of Antimicrobial-Resistant Campylobacter jejuni on Japanese Broiler Farms

The Paternal Effect of Campylobacter jejuni Colonization in Ceca in Broilers

Quantifying Transmission of Campylobacter jejuni in Commercial Broiler Flocks

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